I beat the game in about 20 hours. That is NOT an RPG to me. No naruto game for the Game Boy or the DS are any good.
This is pretty much the flow of the game: fight monsters, find items, fight monsters, go around the closed path, fight monsters, talk, find items, fight strong ninja, die, repeat.
Once you beat the game, you can play with other characters like shikamaru, Choji, and Neji, but it still is the same game that you beat.
If you like RPG's and you want to try it out, thats fine, but if you don't plan on playing over and over again, then I suggest you find a way to play it WITHOUT buying it.